| <-January 1966 | February 1966: | March 1966-> |
| Sunday: | Monday: | Tuesday: | Wednesday: | Thursday: | Friday: | Saturday: |
| 1: The 4th Tuesday in Ordinary Time | 2: The Presentation of Our Lord in the Temple | 3: The 4th Thursday in Ordinary Time | 4: The 4th Friday in Ordinary Time | 5: The 4th Saturday in Ordinary Time | 6: The 5th Sunday in Ordinary Time | |
| 7: The 5th Monday in Ordinary Time | 8: The 5th Tuesday in Ordinary Time | 9: The 5th Wednesday in Ordinary Time | 10: The 5th Thursday in Ordinary Time | 11: The Memorial of Our Lady of Lourdes | 12: The 5th Saturday in Ordinary Time | 13: The 6th Sunday in Ordinary Time |
| 14: The 6th Monday in Ordinary Time | 15: The 6th Tuesday in Ordinary Time | 16: The 6th Wednesday in Ordinary Time | 17: The 6th Thursday in Ordinary Time | 18: The 6th Friday in Ordinary Time | 19: The 6th Saturday in Ordinary Time | 20: The 7th Sunday in Ordinary Time |
| 21: The 7th Monday in Ordinary Time | 22: The Feast of The Chair of Saint Peter, Apostle and Martyr | 23: Ash Wednesday | 24: The Thursday after Ash Wednesday (Lent) | 25: The Friday after Ash Wednesday (Lent) | 26: The Saturday after Ash Wednesday (Lent) | 27: The 1st Sunday of Lent |
| 28: The 1st Monday of Lent |